Support for hammer-machine drills



I. H. COCKS. SUPPORT FOR HAMMER MACHINE DRILLS. APPLICATION FILED IAII. SI. 1920.

MM.Y

' attenua@ UNITED STATES JOI-IN' I-LICOCKSV, 0F MORENCI, ARIZONA.

SUPPORT FOR HAMMER-MACHNE DIR-ILLS.

Specification of Letters Patent.

y Patented Ang. it?. i920.

Application led January 3l, 1920. Serial No. 355,486.

To all whom t may concern.'

lle it known that l, JOHN H. Cocks, a citi- ;fcn of the United States, residing atMoi. in the county of Greenlee and State oi Arizona, have invented certain new and usetul improvements in Supports for Hammer- Machine Drills, of which the following is a specification, reference being had to the accompanying drawings.

Thisinvention relates to certain improvements in supports for hammer machine drills, and it is an object of the invention to provide a novel and improved support of this general character which operates to relieve the operator from the Vweight of the drill and which permits the drill being maintained in proper alinement with respect to the cut.

The invention consists in the details oi' construction and in the combination and arrangement of the several parts oi my improved support whereby certain important advantages are attained and the device Vrendered simpler, less expensive and otherwise more convenient and advantageous Jfor use7 as will be hereinafter more fullyset forth.

The novel features of my invention willV hereinafter be definitely claimed.

ln order that my invention may be the better understood, I will now proceed to describe the same with reference to the accomp anying drawings, wherein Figure 1 is view partly in side elevation and partly in section illustrating a support constructed in accordance with an embodiment of my invention; and

Fig. 2 is an enlarged fragmentary view partly in section and partly in iront eleva# tion of the device as herein embodied.

As disclosed in the accompanying drawings, M denotes a jack hammer machine drill embodying the steel or bit a, the guide rods t, and an annular groove c extending therearound.

The support comprises a leg L constituting two telescopically engaged sections 1 The section 2 is provided with a series of longitudinally spaced openings adapted to register with the radially alined openings (5 produced in the section 1 adjacent the upper end thereof anddisposed through said registering openings is a holding member or shank 7. By this means, it is possible to maintain the sections l and 2 in their diiferent relative adjustments. rThe upper or outer end portion of the section 2 is provided v-:ith a tubular cross-head 8 through the bore of which is directed a headed shank l. or the like, having engaged in one end portion thereof a nut 10 or its equivalent.

S denotes a saddle, preferably made of scrap iron, and includes a central arcuate portion 11 which engages within the groove c of the machine M from below. The end portions l2 oi the saddle S or the portions thereoi` at opposite sides of the central arcuate portion 11 are disposed substantially in parallelism and in a direction away 'from the machine M. The free extremities ol the portions or arms 12 are provided with openings ll through which the shank 9 is disposed.

The central part of the arcuate portion 11 is formed to provide a loop or pocket 15 in which is received one of the rods o.

A denotes a substantially U-shaped member having its intermediate portion 16 arcuate in form and adapted to engage within the groove c of the machine lvl from above and the free extremities of the side arms 1T or the member A are provided with the openings 18 through which the shank 9 also directed. The central part of the intermediate l.iortion 16 oi" the member A is provided with the Vpocket or loop 19 in which the second rod 7) is received. The loops or pockets 15 and 19 eoact with the rods b to maintain the machine M in proper position. rlhe arms 1T of the member A are preferably arranged outwardly ot the arms 12 and have contact therewith. The clamping action of the shank 9 and the nut 10 upon said arms V15 and 19 is such as to normally maintain the saddle S and the member A against swinging or rocking movement with respect to said shank 9, although when the necessities of practice ma]V require, said saddle S and member A may be caused to rock or swing by slight pressure thereon.

In practice, when a hole is to be started. the leg L is placedin such position under the machine M that the center of gravity of the hole mechanism is practically over the point of support whereby the operator is practically relieved of all the weight of the machine and can with slight effort swing it forward or away from the face of the work to get the proper direction of the hole. VIn view of the fact that the leg L affords only a single support, the machine may be easily moved bodily to a desired position and particularly when used in connection with downwardly slanting cuts.

T he use of my improved support also keeps the operator away from the lair ex haust and the vibrations of the machine to which the operator now is generally subjected so that the health of the operator is safeguarded and the possibility of injury is materially lessened.

In the use of my improved support, the i drifts can be carried any width or any height as no posts or bar mounts are required.

I1`rom the foregoing description, it is thought to be obvious that a support constructed in accordance with my invention is particularly well adapted for use by reason ofthe convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof.J and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

l. A support for a jack hammer machine drill comprising a supporting leg, a substantially U-shaped saddle haif'ing its intermediate portionarcuate to receive the machine, the side arms of the saddle extending in a direction toward the support, a second substantially U-shaped saddle having its'intermediate lportion arcuate to embrace the machine at a point opposite tothe intermediate portion of the first named saddle, the arms of the second-named saddle overlying the arms of the first-named saddle, and means for clamping the arms of both of the saddles to the leo'.

2. A support for a jack hammer machine drill comprising a supporting leg, a substantially U-shaped saddle having its intermediate portion arcuate to receive the machine, the side arms of the saddle extending in a direction toward the support, a second substantially U-shaped saddle having its intermediate portion arcuateto embrace the machine at a point opposite'to the intermediate portion of the Erst-named saddle, the

' in a direction toward the support, a second substantially U-shaped saddle having its intermediate portion arcuate to embrace the machine at a point opposite to'theintermediate portion of the first-named saddle, the arms of the second-named saddle overlying the arms of the first-named saddle and means for clamping the arms of both of the saddles to the leg, said machine being provided with an annular groove in which the intermediate portions of both of the saddles and member are received.

4. A support for ajaclr hammer machine drill comprising a supporting leg, a substantially U-shaped saddle having its intermediate portion arcuate to receive the machine, the side arms of the saddle extending in a direction toward the support, a second substantially U-shaped saddle having its intermediate portion arcuate to embrace the machine at a point opposite to the intermediate portion of the first-named saddle, the arms of the second-named saddle overlying the arms of the first-named saddle, and means for clamping theV arms of both of the saddles to the leg, the means for clamping the arms of the saddle and member to the leg permitting a swinging movement thereof under force.

In testimony whereof I hereunto aiiix my signature.

JOHN H. COCKS. 

